Improvement in chimney-cowls



P. A. DUGAN. Chimney Cowl.

Patented June 11,1878.

Evan/i014 UNITED STATES PATENT OF ICE;

PHILIP A. ,D'UYGAN, OF nrtooknvrgnnvv YORK.

IMPROVEMENT IN CHlMNEY-COWLS.

Specification forming part of Letters Patent No. 204,804, dated June 11,1878; application filed May 15, 1878.

To all whom it may concern:

Be it known that I, PHILIP A. DUGAN, of Brooklyn, Kings county, NewYork, have invented, made, and applied to use Improvements in theConstruction of Ohimney-Oowls; and that the following is a full, clear,and correct description of the same, reference being had to theaccompanying drawing, making part of this specification, and to theletters of reference marked thereon, in which- Figure l is a sectionthrough the line y y of Fig. 2. Fig. 2 is a front elevation of mychimney-cowl. Fig. 3 is a section through the line so a; of Figs. 1 and2.

In the drawing like parts of the invention are designated by the sameletters of reference.

The nature of the present invention conslsts in improvements in theconstruction of chimney-cowls, as more fully hereinafter set forth, the.object of the invention being the production of a chimney-cowl simple inconstruction and effective in operation.

To enable those skilled in the arts to make and use my invention, I willdescribe the same.

Ashows a square base, formed of metal, made of the proper height, andintended to support the revolving cowl B. The base A has placed withinits interior the cross-braces a a positioned relatively at or near itsbase and upper portion, through which passes a spindle, c, the upperportion of which is pointed, and forms a pivot, on which the cowlrevolves. B shows the cowl, formed of a section of acylinder, having themetal of which it is composed upon one side serrated and bent or thrownout to form the wings C, while in its opposite side is an opening,provided with the mouth-piece I), for the entrance of the .whnl. d is across-brace, placed upon the interior of the cowl B, and provided with aneck, 0, through which passes the spindle c,- and f is a cap-piece,secured upon the under side of the cover E of the cowl, within which thepivoted end of the spindle c is received.

The spindle c has a screw thread, g, cut upon it above the neck 0, andon this is passed a nut, h, by turning which the position of the upperportion of the cowl B may be regulated as the same is drawn closer to orremoved from the pointed end of the spindle 0. Within is as follows: Thesquare base A, having had placed upon it the revolving cowl B, ispositioned properly upon the chimney of the house or building andsecured in position upon the same. As the cowl B revolves, the airenters it through the mouth-piece D and passes over the curved upperportion of the shield or deflecting-plate E and .to the opposite side ofthe cowl. The smoke from the chimney rises through the same, enters thesquare base A, passes through it, is deflected in its course by thedeflecting-plate or shield F, and, being met by the current of air whichhas entered the cowl through the mouth-piece D, is expelled through andfrom the enlarged opening in the same, the wings G, as it passes them,tending to direct it after it leaves the square base.

The projecting collar or flange H, projecting, as it does, below the topof the square base,

serves also, to a certain extent, todirect any currents of air which mayenter the cowl at this point upward and directly into the interior ofthe cowl, whence they are properly deflected and directed by thedeflecting-plate or shield.

By the use of a cowl constructed as shown, the chimney to which the cowlis applied will be kept free and relieved of the smoke expeditiously,and an excellent draft in the same be created.

Having now set forth my invention, what I claim as new is 1. Thecombination-,'in a chimney-cowl, of the following elements: a squarebase, A, and a revolving cowl, B, composed of a section of a cylinder,and provided with a deflectin g-plate or shield, F, and supported by aspindie, 0, constructed and operating substantially and vane G,constructed and operating sub as anti} for the purposes specified. 1 fstantially as and for the purposes set forth.

2. he combination in a chimney-cow o the following elements: a squarebase, A, re- PHILIP DUGAN' volving cowl B, supported by aspindle, c, andIn presence ofprovided with wings G, deflecting-plate or r A. SIDNEYDOANE, shield 13, mouthpiece D, circular collar H, WILLIAM V. H. HICKS.v

